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Arxiv.org

4 4.0

Impact of the interface quality of Pt/YIG(111) hybrids on their spin Hall magnetoresistance

Jun 29, 2018 06/18

by Sabine Pütter; Stephan Geprägs; Richard Schlitz; Matthias Althammer; Andreas Erb; Rudolf Gross; Sebastian T. B. Goennenwein

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We study the influence of the interface quality of Pt/Y$_3$Fe$_5$O$_{12}$(111) hybrids on their spin Hall magnetoresistance. This is achieved by exposing Y$_3$Fe$_5$O$_{12}$(111) single crystal substrates to different well-defined surface treatments prior to the Pt deposition. The quality of the Y$_3$Fe$_5$O$_{12}$(YIG) surface, the Pt/YIG interface and the Pt layer is monitored \textit{in-situ} by reflection high-energy electron diffraction and Auger electron spectroscopy as well as...
Topics: Mesoscale and Nanoscale Physics, Condensed Matter
Source: http://arxiv.org/abs/1612.08150

Arxiv.org

8 8.0

$Origin of the spin Seebeck effect probed by temperature dependent measurements in Gd$_{3}$Fe$_{5}$O$_{12}$$

Origin of the spin Seebeck effect probed by temperature dependent measurements in Gd$_{3}$Fe$_{5}$O$_{12}$

Jun 30, 2018 06/18

by Stephan Geprägs; Andreas Kehlberger; Tomek Schulz; Christian Mix; Francesco Della Coletta; Sibylle Meyer; Akashdeep Kamra; Matthias Althammer; Gerhard Jakob; Hans Huebl; Rudolf Gross; Sebastian T. B. Goennenwein; Mathias Kläui

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We probe the spin Seebeck effect in Gd$_{3}$Fe$_{5}$O$_{12}$/Pt hybrid structures as a function of temperature and observe two sign changes of the spin Seebeck signal with decreasing temperature. A first sign change occurs at a temperature close to the Gd$_{3}$Fe$_{5}$O$_{12}$ magnetic compensation point at around 280 K. There the spin Seebeck signal changes sign abruptly with unaltered amplitude, indicating that the spin current is mainly caused by the magnetic Fe sub-lattices, which reorient...
Topics: Mesoscale and Nanoscale Physics, Condensed Matter
Source: http://arxiv.org/abs/1405.4971

Arxiv.org

71 71

Novel Multifunctional Materials Based on Oxide Thin Films and Artificial Heteroepitaxial Multilayers

Sep 22, 2013 09/13

by Matthias Opel; Stephan Gepraegs; Edwin P. Menzel; Andrea Nielsen; Daniel Reisinger; Karl-Wilhelm Nielsen; Andreas Brandlmaier; Franz D. Czeschka; Matthias Althammer; Mathias Weiler; Sebastian T. B. Goennenwein; Juergen Simon; Matthias Svete; Wentao Yu; Sven-Martin Huehne; Werner Mader; Rudolf Gross

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Transition metal oxides show fascinating physical properties such as high temperature superconductivity, ferro- and antiferromagnetism, ferroelectricity or even multiferroicity. The enormous progress in oxide thin film technology allows us to integrate these materials with semiconducting, normal conducting, dielectric or non-linear optical oxides in complex oxide heterostructures, providing the basis for novel multi-functional materials and various device applications. Here, we report on the...
Source: http://arxiv.org/abs/1001.4447v2

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